verilator/test_regress/t/t_class_func_nvoid_bad.v

// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain.
// SPDX-FileCopyrightText: 2020 Wilson Snyder
// SPDX-License-Identifier: CC0-1.0


class Cls;
  function int fi();
    return 10;
  endfunction
  function void fv();
  endfunction
  task t();
  endtask
  static function int sfi();
    return 10;
  endfunction
  static function void sfv();
  endfunction
  static task st();
  endtask
endclass

module t;

  function int mod_fi();
    return 10;
  endfunction
  function void mod_fv();
  endfunction
  task mod_t();
  endtask

  initial begin
    Cls c;
    c = new;

    // For test of calling function in void context, see t_func_void_bad.v

    // Module
    if (mod_fi() != 10) $stop;  // OK
    void'(mod_fi());  // OK

    mod_fv();  // Warn IGNOREDRETURN
    void'(mod_fv());  // OK
    if (mod_fv() == 10) $stop;  // Bad call of task as function

    mod_t();  // OK
    if (mod_t() == 10) $stop;  // Bad call of task as function

    // Member functions
    if (c.fi() != 10) $stop;  // OK
    void'(c.fi());  // OK

    c.fv();  // Ok
    void'(c.fv());  // OK
    if (c.fv() == 10) $stop;  // Bad

    c.t();  // OK
    if (c.t() == 10) $stop;  // Bad

    // Static member functions
    if (c.sfi() != 10) $stop;  // OK
    void'(c.sfi());  // OK

    c.sfv();  // Ok
    void'(c.sfv());  // OK
    if (c.sfv() == 10) $stop;  // Bad

    c.st();  // OK
    if (c.st() == 10) $stop;  // Bad

    $stop;
  end
endmodule